This sounds like a serious hardware fault; out of curiosity I would attempt to boot a live operating system such as Ubuntu Linux: Download | Ubuntu
Download Ubuntu, burn the image file to disk (using ImgBurn, or similar), then boot your computer from this disk. Ubuntu has an option to "Try Ubuntu" which essentially runs it live from the CD.
If you get an Ubuntu desktop you can try moving files around on your hard drive, inserting a CD, etc.
Given what you wrote in your post - I doubt that you will get to the Ubuntu desktop, which confirms that you are experiencing a hardware fault.
Best of luck